14021240 has 48 divisors (see below), whose sum is σ = 33329880. Its totient is φ = 5307840.

The previous prime is 14021233. The next prime is 14021263. The reversal of 14021240 is 4212041.

It is a super-2 number, since 2×14021240² = 393190342275200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13955 + ... + 14925.

Almost surely, 2^14021240 is an apocalyptic number.

14021240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 14021240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16664940).

14021240 is an abundant number, since it is smaller than the sum of its proper divisors (19308640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

14021240 is a wasteful number, since it uses less digits than its factorization.

14021240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020 (or 997 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 14021240 is about 3744.4946254468. The cubic root of 14021240 is about 241.1360491681.

Adding to 14021240 its reverse (4212041), we get a palindrome (18233281).

The spelling of 14021240 in words is "fourteen million, twenty-one thousand, two hundred forty".